Chapter 12 Ddns; Ddns Overview; What You Can Do In This Chapter; What You Need To Know - ZyXEL Communications USG40 User Manual

12.1 DDNS Overview

Dynamic DNS (DDNS) services let you use a domain name with a dynamic IP address.

12.1.1 What You Can Do in this Chapter

• Use the DDNS screen (see
domain names and their details.
• Use the DDNS Add/Edit screen (see
ZyWALL/USG or to edit the configuration of an existing domain name.

12.1.2 What You Need to Know

DNS maps a domain name to a corresponding IP address and vice versa. Similarly, Dynamic DNS
(DDNS) maps a domain name to a dynamic IP address. As a result, anyone can use the domain
name to contact you (in NetMeeting, CU-SeeMe, etc.) or to access your FTP server or Web site,
regardless of the current (dynamic) IP address.
Note: You must have a public WAN IP address to use Dynamic DNS.
You must set up a dynamic DNS account with a supported DNS service provider before you can use
Dynamic DNS services with the ZyWALL/USG. When registration is complete, the DNS service
provider gives you a password or key. At the time of writing, the ZyWALL/USG supports the
following DNS service providers. See the listed websites for details about the DNS services offered
by each.
Table 141 DDNS Service Providers
PROVIDER
DynDNS
Dynu
No-IP
Peanut Hull
3322
Selfhost
Note: Record your DDNS account's user name, password, and domain name to use to
configure the ZyWALL/USG.
After you configure the ZyWALL/USG, it automatically sends updated IP addresses to the DDNS
service provider, which helps redirect traffic accordingly.
C
Section 12.2 on page
Section 12.2.1 on page
SERVICE TYPES SUPPORTED
Dynamic DNS, Static DNS, and Custom DNS
Basic, Premium
No-IP
Peanut Hull
3322 Dynamic DNS, 3322 Static DNS
Selfhost
ZyWALL/USG Series User's Guide
382
HAPTER
383) to view a list of the configured DDNS
384) to add a domain name to the
WEBSITE
www.dyndns.com
www.dynu.com
www.no-ip.com
www.oray.cn
www.3322.org
selfhost.de
1 2
DDNS